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04-11-2025 12:43

Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

04-11-2025 09:07

Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

04-11-2025 14:53

Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

03-11-2025 21:34

Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

03-11-2025 19:41

David Chapados David Chapados

Hi,Does anyone knows which genus could this be? G

28-10-2025 15:37

Carl Farmer

I'd be grateful for any suggestions for this strik

03-11-2025 16:30

Hans-Otto Baral Hans-Otto Baral

Hello I want to ask you if you have found this ye

01-11-2025 09:14

Francis Maggi

Bonjour,Trouvé sur Xanthoria parietina à Valdebl

28-10-2025 19:33

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Je voudrais votre avis sur cette r

31-10-2025 09:19

Lothar Krieglsteiner Lothar Krieglsteiner

Can somebody provide me with a file of:Rogerson CT

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Asco found on Fraxinus twig
Robin Isaksson, 01-01-2022 21:17
Robin IsakssonHi!


asco react orange- brown in koh10%

Spores around 6,5-8,5x 3,5-4 um, asci 8 spored, picture spores in water.

Asci topp no rection in lugols. 

anyone knows it? 

found in Sweden

Best regrads
  • message #71269
  • message #71269
  • message #71269
  • message #71269
  • message #71269
  • message #71269
Björn Sothmann, 01-01-2022 21:22
Björn Sothmann
Re : Asco found on Fraxinus twig
Hi Robin,

by chance I just came across a post on Twitter 5 minutes ago where Mark Powell showed Unguiculariopsis thallophila on Lecanora hybocarpa. This seems to match your collection rather well, in particular since your brown ascomycete seems to be on some lichen, so you might compare with it.

Björn
Robin Isaksson, 01-01-2022 21:26
Robin Isaksson
Re : Asco found on Fraxinus twig
Hi,

Yes of course, I have seen it several times before. Was completely in other thoughts.

thanks so much.

Best regards

Hans-Otto Baral, 01-01-2022 22:13
Hans-Otto Baral
Re : Asco found on Fraxinus twig
I agree. There is a wide range in the ascospore width in the literature: 6-10 x 2-4 µm.  What I studied (3 samples with drawings) has spores around 6-8 x 2.3-2.7 µm. Your spores look distinctly broader than mine, though of the same length.

More details about the hairs would helpful, they have usually narrowed and curved apices.